Answer: 3:2.
Explanation:To find the ratio of A's to B's, we divide the number of A's by the number of B's. In this case, there are 6 A's and 4 B's, so the ratio is 6:4. This can be simplified by dividing both numbers by their greatest common divisor, which is 2. Therefore, the ratio of A's to B's is 3:2.
